Lubricating mechanism



June 2,5, 1935# v J. s. BAKER Y JUBRICATING MECHANISM Filed Nov. 21, 1932 WL, E Esme A @iwf 5. 50/

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Patented June 25, 1935 -UNITED vS'TA'T'IEIS PATENT OFFICE v"2,0o5,7z4.v p

vLUBRICMING MECHANISM n .mimy s. Baker, Evansville, wis. application Nevmter 21, 1932, serial Nn. 6435550 y I 21 Claims.

invention relates generallyjto lubricating mechanisms'and 'more particularly tothe lautomatic iubricationof almechanism 'for' rotary into. reciprocatory motion.

rconverting One Objectis to V4provide-a novel means for distributing lubricating fluid to a plurality Aof different bearing joints in amechanism 'for converting rotary into reciprocatory.

panying drawing, in which yFigure l is a sectional view of a rmechanismfor converting rotary into reciprocatory motion embodying the features of the present invention, the section being taken along the line I-'I- of Fig. 2. 'Y

Fig. 2 is a sectional view taken along the line 2-2 ofvFig. 1.

Fig. 3 is a sectional view taken along -the line '3-3 of Fig. 2. Figs. 4 and 5 are fragmentary sectional views taken along the linel --d of Fig. 3 and 5-5 of Fig. 1 respectively.

In the drawing, the -invention is embodied in a mechanism Vo'f the type frequently usedin windmills `and pumps wherein the rotary a driving member in the form of `a motion of shaft B is converted by ra crank gear 1 into reciprocatory motion *of a driven member'in the form of a pitman i8. vto the horizontal and its outer and 'The shaft 'is slightly inclined relative upper end projects through a recess in the end of an Aextension 8a of the casing!! and is journaled `at spaced points in bearings -ID and II.

Fixed on with 'the casing.

The pitman projects upwardly through an opening in the tube I5 upstanding *from the bot'- tomfof the casing, and the upper end man is connected byaswivel joint I6 kof the pitto a trunnion I 'i projecting laterally .from the free -end of a rocker member I8.

Projecting into a recess in the lopposite side of the rocker arm is a lateral extension I9 of a connecting rod '20,

`the lower end of which has a similar extension projecting into a recess near 'the periphery vof gear.

the O'crank The rocker member is supported for vertical oscillation by a horizontal pivot in :the form of a .shaft 2|, the opposite ends of which project into and have a tight fit in recesses formed :in opposite side wals vof the casing. To provide the desired bearing area, the pivoted `end of the rocker :is `formed with .lateral arms 22. the rocker thus supported, it will be apparent that in each revolution of the crankzgear 1, the .rocker will move upwardly and downwardly through horizontal position between a lower position shown .in Fig. 1 .andan upperposition.

The lower portion of the :casing 5 forms zasump for a quantity 'of .lubricating lluid into whichk the lower segmentalportion of 'the Icrank geardips, some of the .fluid being ,from this gear to the pinion ,fr om which itiruns down to the bear-- ing lII.. The upper connecting .rod bearing, the 'swivel joint I6, and the rocker pivotare clisposed above the .level oi the crank .gear and .must be lubricated by 'other means. The means hereinprovided for elevating .lubricant from the sump to the point of distribution above the bearings comprises a substantially rigid ring 23 (encircling the shaft l21 :and disposed in .the plane of the' craznk I labove the latter. The ring rests npon `tlfiemiper portion iof .the .crank gear and lis maintained this position by a Urshaped guide member .24 engaging theinner ring :surface so as to hold .the ring 'properly positioned in contact the :gear teeth. The guide 24 and guides 25 and 26 conneoted thereto fb-y arms 121., provide lateral .support "for the ring which is, in view tof its :frictional contact with .the teetlhvof the crank Vgearfno- `tated continuously in :a counterclookwise idirec- 35 tion (Fig. l.) during rotation of the latter. In such rotation, a port-ion Aof the lubricating ifluid carried upwardly iby the crank gear is transferred onto the ring and thereby elevated automatically. The present Ainvention contemplates scraping a portion of the `oil carried Iby the ring oif the surface thereof .and `distribution :of this o'il to the different bearings. For this purpose, theguide 25fis disposed directly above the Ishaft 2|. upwardly opening receptacle in 'the form :of an elongated `groove '28 `is formed inthe rockerand its bearing 1arms. '22 with .one end portion adapted when the rocker is in its lowermostposition-shown in Fig. l to receive the Voil'droppiizlg from'tne guide 25. Holes '29 are formed atv-opposite ends v'of the groove to permit oil *to flow from the groove to the 'bearing fsurfaces formed bythe shaft 211 In the present instance, the `ends of lthe grooveiarev inclined relativeto theax'is -of the shaft'ZI and the central portion disposedmcrc remotely from 'rocker arm, the bottom portion 30 of the groove will slope downwardly from the adjacent hole 29 causing a portion of the oil to flow over a ledge 3| 4 near the center of the groove and thus become entrapped in the other end portion. o1' the groove during the succeeding upward stroke of the rocker. In View of the inclination of the end portions of the groove relative to the shaft 2 I, it will be apparent thatl in the upward stroke of the rocker, the center ofthe groove will be raised above the level of the holes 29 thereby changing the inclination of the bottom surfaces of the groove ends and automatically increasing this inclination so as to induce a positive ilow of oil toward the respective holes 29. widely spacedrocker bearing surfaces are thus thoroughly lubricated at all times;

Extending longitudinally of the rocker member is a second upwardly opening receptacle in the'form of a groove `32ihaving a lateral extension33 at one. e'nddisposed adjacent the groovey n 28.' `When .therocker is above khorizontal position, the extension 33 is positioned beneath the guide 25 and thus receives the oil dropping therefrom., 'During the lower-half of the rocker stroke, the .oilfthus 'received fiows down along the arm and is discharged overv aledge 34 into a groove 35 leading .to a hole 3`| in the joint at the upper endofthe'connecting rod. The groove 35 is at an angle with the hinge -pin 2 I. Because of `this angle when the rocker is up, some of the oil which is discharged into the groove 35 flows overa ledge f38 into a-groove.39. When the rocker is down, this oilruns into the bearing of the swivel joint 16.1 Anypilfoverfiowing the swivel joint I6 accumulates around the lower edge of an overhang- Ting fiange 42 and drops back into the sump withl"out flowing down 'the pitman. Loss of voil by -leakage along the pitman is thereby avoided.

ItVwill-be` apparent that the oil removed from `-the ring- 23 by the'guide -25- falls lfirst into the groove 3D and then into the groove 33 asan inci- .dent to rocking of the arm l8,part of the oil being" distributed to the rocker pivot and the remainder to the connecting rod and swivel'joints. Sufiicient. oilA will be available for all of these 4bearings owing to the fact thatfthe guide 254is .the first to ybe engaged by a portion Vof the ring surface after passing out of contact with the crank gear. 5

i Since-the guide 25 .bears only against the sides of the ring 23, only a portion of the oil on the ,'ring'surface is scraped .off Aand distributed to the rocker bearings. The guides 24 also bear against the inner peripheralsurface of the ring and thus scrape off an additional quantity of theroil which flows down the l'arm2`l by which `the ringguides are supported into an inclined trough40. .The itrough discharges into a tube 4| leading to the outermost endV of the shaft bearing l0.. The guide 2B also serves to scrape -offfoilf-from the `surface ofk vthe ring and deliver the sameto, the trough. Some of the oil discharged ontothe bearing ID runs downalong, the .shaft 6 and the :surplus drops y*onto the bottom of the casing extension 8a and flows back into theoil sump.

y From the foregoing, itwill be apparent that Ithe .invention'provides an extremely reliable means for effectingcontinuous self-lubrication of all of the different bearings ina; mechanism of the character described` Theelevating mechanis'mis of simple and inexpensive character and all of the, bearing surfaces supporting the same areself-lubricating...

The relatively large vand-V 'supportsl and disposedcloser to said axis than the 1 I claim as my invention:

l. In a mechanism for converting rotary motion of a driving member into reciprocatory motion of a driven member, the combination of a casing having recesses therein through which said members project and providing a sumprat its lower end for containing lubricating fluid, an`

elongated rockerabove the level of liquid in said casing, bearing supports on opposite sides of said rocker at one end .thereof supporting the latter for vertical movement of its free rend about a horizontal axisand above and below horizontal position, an elongated upwardly opening 'groovey on the rocker disposed generally longitudinally of and adjacent said axis and having opposite ends'communicating with the surfaces of said intermediate portion `of the groove, the opposite Y end .portions of said groove having bottom surfaces which slope toward said supports when said lrocker-is disposed above `horizontal position, means operableas an incident to` rotation of said driving member to` convey uid upwardly .from said sump and discharge the same downwardly intosaid groove, and a ledge intermediatethe ends of the groove,y for entrappingfluid' in each end thereof in the .upward movementv of vsaid rockers, x L f y 2. In a mechanism vfor converting rotary motion of a driving member into reciprocatory motion of a drivenmember, the combination Vcfa ycasing .having recesses .thereinthrouglr which said members projectand providing a `sump at its lower end for containing lubricating fiuid, an elongated rocker above the level of liquid in said casing, spaced bearing supportsl providing a horizontal pivot lfor one ,end of said rocker, means for conveying nuid upwardly from said sump and'dischargingthe same downwardly from' a point above said pivot, a receptacle on the pivoted end .of said rocker opening upwardly to receive said fluid and having bottom surfaces slanting in oppositedirections toward and communicating with the bearing surface of each of said supports,v the `inclination of. said-bottom surfaces increasing automatically in the upward movement of the free end of ysaid rocker. y

3. .In a mechanism for converting rotary mol.tion of a driving member into reciprocatory moreceive the fluid-discharged downwardly and having its intermediate portion spaced from the pivot and itsopposite end portions'sloping toward the pivot and communicating With the bearing surfaces ofsaid supports, said yportions having oppositely sloping,` bottom surfaces increasing in inclination in `the upward movementA of said rocker, and means operable in such -upward movement to entrap some ofsaid'fluid in each end portion of said groove. j e

4. In a mechanismfor converting rotary motion of a driving member into reciprocatory motion of Ya driven member, the combination of a casing having recessestherein through which said members project and providing a sump at its lower mentaal;

end for lcontaining lubricating fluid, an .elongated rocker `above the level of liquid Ain said easing, fspaced :bearing ysupports providing a [horizontal pivot for one end of said rocker, means for conveying fluid upwardly 'from said sump and discharging the same downwardly fromf'a -pointfabove saidipivo't,.a .receptacle .on the pivoted end-of said .rocker opening upwardly ltorreceive said lluidand communicating with Athe lbearing surfaces yof Yeach 'of said supports, `means operating during'the "having recesses `therein through'which saidmembers project and providing :a Asump at its lower end'ior containing lubricating fluid, a rocker arm mounted in said casing for .vertical Aoscillation through horizontal position about .a horizontal pivot above the level of said fluid, the free `end of said arm having a pivotal connection with said .driven member, .means for conveying `fluid from said sump to .a point above .said pivot and discharging vthe same ina downward direction, an upwardly opening receptacle on said. arm adjacent said pivot communicatingfwith fthe bearing surface thereof and .adapted to :receive the fluid during the lower portion of the rocker stroke, and an elongated upwardly opening'receptacle extending longitudinally of saidfarm and commun nicating yat one fend with the bearing surface of said connection, the other end being 'disposed adjacent said 'pivot and adapted toreceive the fluid .during the upper portion ofthe rocker stroke.

Ina mechanism for converting irotary motion of a driving member into reciprocatory motion of a .driven member, the :combination of a casing having recesses therein through .whichsaidmem- `bers project and providing fa sumpatits lower end for containing lubricating fluid, a rocker. arm mounted in said casing for Vvertical oscillation through horizontal `position .about @a 4horizontal pivot vabove the .level yof said duid, 'the free end oisaid arm having a .pivotalconnection*with said driven member, means for vconveying fluid upfwardly from vsaid-sump Aand discharging a 'stream thereof downwardly, upwardly opening `:receptacles on said arm disposed. diierent distances from said pivot so as to receive said `stream in different portions oi the rocker stroke, said receptacles communicating respectively vwith kthe bear.- ing surfaces of said pivot andfconnectionand have ,ing bottom surfaces each shaped `to induce the of lluid to the associated bearing during the portion of the rocker stroke when ,said stream is beingdischarged into the other receptacle.

'7. In a Amechanism forfoonverting rotary 1moition of a driving member into reciprocatory motion of a driven member, 'the'combination vof a casing having krecesses therein through 4which said members project and providing `a sump vat its lower rend for `containing, lubricating fluid, a rocker `arm mounted in said casing for vertical oscillation through horizontal position abouta vhorizontal pivot .above the level of said fluid, the free end of said arrnhaving.apivotalconnection with said driven'member, means for conveying fluid upwardly from said sump-'and discharging a streamV thereof downwardly, :and upwardly opening receptacles on said arm communicating :respectively vwith .'-thebearing sur-faces ofv said connection land ,pivot and movable alternately .during .successivestrokes Aof the arm t'oaposition's vforreoeivingsaid stream.

'8. In a mechanism :for converting rotary ,mol

-tion :ofl Aa .driving member into reciprocatory motion of .a driven member, the combination of a casinghaving recesses therein "through which said members .project and providing a sump at :its lower end for .containing lubricating fluid, a rocker arm mounted in said casing forA verticaly oscillationl .through horizontal position .about a horizontal pivot `above thelevel of saidfiuid, the free end of said larml'iaving a pivotal connection with said vdriven .member, upwardly opening re ceptaclesv on's'aid arm communicating' respectively with the bearing surfaces of said pivot and connection and having bottom 'surfaces shaped to induce the flow of duid ytoward said surfaces depending on the position of said arm,.and means operable as an Vincident to rotation of said' driving member-to convey fluid upwardly from said sump and discharge the same downwardly intov said receptacles first' one and then the other.

9. In a mechanism for converting .rotary motion of a 'driving ln'iernber into reciprocatory motion of a'driven member, the combination of CriA a casing providing a sump for lubricating fluid y and having recesses above the level of saidiluid through which said members project, a rocker mounted in said casing for Lvertical oscillation above the level offs'aidfluid and having a pivotal connection with the end of said driven member,

a crankdriven from said driving member, aconf `necting rod for said crank having a pivotal connection with the 'free end of said arm, said con# nections being spaced apart and substantially alined, an upwardly lopening groove extending generally longitudinallyl of the axes of said connections and sloping at opposite -ends toward A'the bearing 'surfaces of the A'connectionsYduring the upper half portion or the rocker armstroke, and -means `for lelevating `the fluid 'from said sump 1and 4discharging vthe saine into isaid groovevduring the lowerhalfportion of the rocker arm stroke, said groove retaining the fluid thereinduring the subsequent movement of the rocker arm.-

1l). In -amechanisin 4lor converting rotary ino`- tion *of a driving member into reciprocatory motion vof a driven member, the combination of `a casing providing `a sump for lubricating fluid yand having recesses above the level of saidfluid through which said members project, a rocker mounted in said Vcasing for verticalV oscillation` above the level of said duid-and having a pivotal connection with the end of said driven member, a crank driven from said ydriving member, a com necting rod 'for said crank having a pivotal convnection with'the 'free end of said arm, `said "connections being spaced apart and substantially falined, Ian 4upwardly opening groove vextending generally longitudinally of the axes of said comA 'nections and'sloping at'opposite ends `toward the bearing surfaces vof the connections during the upper half portion of the rocker arm stroke, means 'for elevating thefluid from saidsump and -dischargingthe same into saidgroove during the lowerhalf portion of the rocker Iarm stroke, yand vmeans `operable during the upperhalf portion .oftherrocker arm stroke Atorseparatethe fluid in said grooveintotwo parts.

`11. In amechanism'for converting vrotary motion of La ,driving vmember into reoiprocatory mo,n

tion of fa driven member, the combination tof a -casingiproviding rasump for ,lubricating yfluid and having recesses above the level of said iluid through which said members project, a rocker arm mounted in said casing above the level of said fluid for vertical oscillation about a horizontal pivot and having a connection with said driven member, a crank gear driven by said driving member mountedwithin said casing for rotation aboutr a horizontal axis` and having a lower segmental portion dipping in said liquid, a connecting rod between saidgear and said arm, a substantially rigid ringdisposed in a vertical plane and encircling the axis of said pivot, said ring resting "on the periphery of said gear so as to be rotated thereby, means for scraping the fluid from the surface of said ring at a point abovethe level of said pivot, and means receiving said fluid and inducing the flow thereof to the pivot bearing. e Y Y 12. In a mechanism for converting rotary motion of a driving member into reciprocatoryfmotion of a driven member, the combination of a casing providing a sump for lubricating fluid and having recesses above the level of said fluid through which -said members project, a rocker arminounted vin said casing above the level of said fluid for vertical oscillation about a horizontal pivot rand having a pivotal connection with said driven member, a crank gear driven u by saiddriving member ymounted Within` said casing for rotation about a horizontall axis with a lower segmental portion dipping in said liquid, a connecting rod actuated by said gear and having a'connection with the free end of said arm, a substantially rigid ring vertically disposed and rotated by said gear by frictional contact with a peripheral surface thereof whereby a portion of said fluid will be elevated by saidV gear and ring, andmeans located above the level of said pivot and acting during rotation of the ring to scrape fluid from., the surface thereof.

13. In a mechanism for converting rotary motion of a driving member into reciprocatory motion of a driven member, the combination of a casing providing a sump for lubricating fluid and having recesses above the level of said fluid.

through which said members project, a rocker arm mounted in said casing above thelevel. of said fluid for vertical oscillation about a horizontal pivot and having a pivotal connection with said driven member, a crank gear driven by said driving member and mounted within said casing for rotation about a horizontal axis with a lower segmental portion dippingI in said liquid, a connecting rod actuated by said gear and having a connection with the free end of said arm, a substantially rigid ring vertically disposed and resting upon the toothed periphery of said gear so as to be rotated thereby and pick up a portionof the` fluid thereon, means for scraping oil the fluid from the surface of said ring, and means receiving the fluid removed from the ring and distributing the same to bearing surfaces between said rocker arm and said pivot, said crank and said driven member.

14. In a mechanism yof the character described, the combination of a casing providing a sump for lubricating fluid, a bearing to be lubricated disposed above the level of said liquid, a vertically disposed rotary member having a lower segmental portion dipping in said fluid, a substantially rigid ring rotatably mounted above said member and continuously contacting a peripheral surface thereof above the fluid level so as to be rotated byV the member, and

means located above said bearing for scraping fluid from a continuous annular surface of said vring during rotation of the latter and directing the Vflow of the fluid thus removed toward said bearing. v

15. In a mechanism of the character described, .v

the combination of a 4casing providing a sump for lubricating fluid, a bearing to be lubricated disposed above the level of said liquid, a vertically disposed gear having radially projecting` teeth and mounted for rotation with its lower peripheral portion dipping yinto said fluid, auring disposed in the plane of said gear and resting con-` stantly upon the upper portion thereof so as to vbe'rotated thereby, and means located abovek said a plurality of annularly spaced points around said ring for scraping fluid fromthe surface thereof during rotation of the ring, and means receiving the fluid removed from said scraping means and distributing the same by gravitational flow to the respective bearings.

17. In a mechanism of the character described, the combination of a casing providing a sump for lubricating fluid, a plurality of bearings to be lubricated disposed above the level of said fluid, a vertically disposed rotary member having a lower segmental portion dipping in said fluid, a vertically disposed rotatable lring frictionally contacting a peripheral surface of said member so as to be rotated thereby, a plurality of scrapers contacting different peripheral surfaces ofsaid ring and annularly spaced around the ring and acting, during rotation of the ring, to remove fluid therefrom and means receiving the fluid removed by the different Scrapers and distributing the same to the respective bearings. v

18. In a mechanism of the character described, the combination of al casing providing a 'sumpfor lubricating `fluid, a driving shaft having a rdownwardly inclined end projecting into said casing and journaled in a bearing disposed above the level of said fluid, a vertically disposed rotary means receiving the fluid removed yfrom said ring by the respective Scrapers and distributing the same -to the respective bearings.

19. In a mechanism of the character described,

the combination of a casing providing'a sump for llubricating fluid, a bearing to be lubricated disposed above the level ofsaid liquid, a vertically lelevating fluid yfrom Said `sump to a point above said `bearing including an endless vcarrier, advanced continuously by constant frictional rubdisposed rotary member having a -lower segmental portion dipping in said fluid, and means for` bing contact with a peripheral surface on said member. l

20. In a mechanism of the character described, the combination of a casing providing a sump for lubricating fluid, a vertically disposed rotary crank member Within said casing dipping into said uid, an arm mounted in said casing to turn about a fixed horizontal axis, and means for elevating fluid from said sump to a point above said axis including a ring encircling said axis.

21. In a mechanism of the character described, the combination of a casing providing a sump for lubricating uid, a vertically disposed rotary crank member Within said casing dipping into said fluid, a bearing to be lubricated disposed above the level of the iiuid in said sump, means for elevating fluid from said sump' toa point above said bearing including an endless carrier having an uninterrupted peripheral surface in constant rubbing contactwith the periphery of said crank member, and a scraper in constant contact with said continuous surface above the `10 i 

